Intermittent-grip device.



0. E. LOOMIS.

INTERMITTENT GRIP DEVICE. APPLICATION FILED FEB. s, 1914.

1,136,821 Patented Apr. 20, 1915.

2 SHEETS-SHEET 1.

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0. E. LOOMIS.

l-NTERMITTENT GRIP DEVICE.

APPLICATION FILED FEB. 6, 1914.

1,136,821, A Patented Apr. 20, 1915.

2 SHEETS-SHEET 2 UNITED STATES PATENT OFFICE.

OSMOND E. LOOMIS, OF AKRON, OHIO, ASSIGNOBI OF THREE-EIGHTHS TO IVANTHURSBY AND THREE-EIGHTH TO osfi'n E. EOUSH, OF

AKRON. omo.

INTERMIT'IENT-GRIP DEVICE.

Specification of Letters Patent.

Patented Apr. 20, 1915.

Application filed February 6, 1914. Serial No. 818,978.

the production of a device which is provided with simple and efiicientmeans for allowing the same to be turned and operated in either ydirection.

' Another object of this invention is the production of an intermittentgrip device aving a shifting plate which is adapted to shift the lockingmechanism carried withinthe interior of the device for causing the sameto operate in a desired direction.

With these andother objects this invention consists of certain novelcombinations, constructions and arrangements of parts as will behereinafter full ydescribed and claimed. 7

In the accompanying drawings :-Figure 1 is a side elevation of theintermittent grip device constructed in accordance with this inventionand sho'win a stock carried thereby. Fig. 2 is a top p an view of thedevice. Fig. .3 is a section taken on the line 3-3 of Fig. 2. Fig. 4 isa section taken on the line 4-1 of Fig. 1. Fig. 5 is a section taken onthe line 5 5 of Fig. 4. Fig. .6 isa top plan view of a certain head usedin connection with this device. Fig.- 7 is a detailed pering plate.

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spective view of thelockin'g cam. Fig. 8 is a bottom plan view of theshiftingplate. Fig. 9 is a side elevation of the locking plate showingthe locking pins carried thereby. Fig. 10 is a detailed peispective viewof the trigger member used for operating the shift- Fig. 11 is atransverse section taken on the line 1l--11 of Fig. 3 looking indirection of the arrows- Referring to the accompanying drawings bynumerals 1 designates the body of the intermittent grip device which isprovided with a' reduced hollow portion 2 adapted to carrythc handle 3.TlllS body 1 is provided with a comparatively dee rounded pocket 4 whichcommunicates wit the socket bv means of the enlarged o enin 6. A hollowin the body 1. This sleeve 7 is provided at one end with an enlargedhead 9 having a notched portion and an elongated slot 11. this elongatedslot 11 passing through the head 9. In order to rotate this sleeve '7 ina desired direction, it is provided with a groove 12 which communicateswith the groove 13.f 'ormed in the locking cam 11. These grooves 12 and13 are adapted to carry the squared key 12 for holding the locking cam14 in fixed engagement with the sleeve 7 thereby preventing the cam 14from having an independent rotation relative to the sleeve Thiscain 14is substantially triangular in shape and is provided with a central openng 15 for the reception of the sleeve 7. Since the cam 14 fits withinthe pocket 4 it may easily rotate for the purpose of rotating the sleeve7.

In order to rotate thecam 14 and sleeve 7 in the desired direction bymeans of the body 1 and the handle 3, the head 9 is provided with thecircumferential groove 16 upon its inner face connected with the interior of .the pocket 4. This groove 16 is adapted to receive thecircular shifting plate 17 and this plate 17 is provided with aplurality of shifting pins 18. These pins 18 are fixedly secured to theplate 17 in pairs as clearly disclosed in Fig. 8. These pins 18 extendinto the pocket 11 of the body 1 while an operating pin 19 is carriedsons to extend from the opposite side of the plate 17. This operatingpin 19 passes through the slot 11 formed in the head ,9 and carries atits outer end the trigger 20 having the beveled lips 21 adapted to fitin one of the beveled notches 22 formed in the head 9 and conuuunicatingwith the enlarged notch 10. The locking cam 14 is provided at each oneof its free sides with an integral lug 23 which is provided with springreceiving pockets .24. Coiled springs 25 are carried within thesepockets iii-and hear at their opposite ends upon the rollerbearings 26thereby causing these roller bearings 26 to normally engage the lockingpins 18. These roller bearings are loosely mounted within the pocket 4and, therefore, are adapted to slide upon the inner portion of theshifting plate 17. as well as the interior of the pocket 4 and upon thecam 14. Then the head is in the position disclosed in Fig. 1 it will beill) at one end upon the portion of the body 1 within the pocket 4.

\Vhenthrs device is to be. assembled,,the

locking cam may-be placed over the sleeve 7 so as to engage the head 9thereof and be locked into engagement therewith by means of the lug 12'.This will cause each one of the three corners of the locking cam, t0 bepositioned between a pair of the shlftmg pins as clearly disclosed inFig. 5. The

springs 25 .may then be placed within thepockets 24: of the integrallugs 23 at which sleeve 7 by means of the reduced threaded end 8thereof. This stock 28 .maybe provided with a central opening 29 forthere ception of the pin or'drill 30. It will be seen by referring to Fig.3 that the inner end of" this pin or drill 30 extends into the reducedaperture 31 formed in the lower end of the sleeve 7. This portion of thesleeve is rovided with alined slots 32. When it is des red to usethedevice without the stock 28 the stock may be removed at which time a bitor pin mabe positioned within the aperture 31,

an the device may be operated in the usual manner for rotating the bitor pin. The bit or pin may be easily removed by passing an articlethrough the alined slots 32 whereas the head of the bit or pin may bestruck for driving. the same from engagement with the sleeve, so astoallow an instrument to be passed therethrough for forcing the pin orbit from en agement therewith.

When this evice is in use the interior of the same will assume theposition disclosed in Fig. 4. The plate 17 may be shifted to one side.by means of the operatin pin 19 and trigger 20. One of the beve edportions 21 of the trigger may then be placed'in engagement with thehead 9 b positioning the beveled portion in one o the .beveled notches22. When this plate 17 is shifted the lockin pins 18 will also be moved.As theselocklng pins 18 are carried in pairs upon the shifting plate,one pin of the pair will bear directly upon the roller bearing 26 whichenga es the same thereby compressing the coi ed spring of the particularroller bearing 26 and, thereby moving the roller bearing toward the lug,thereby allow ing the roller bearing to have more room. The otherlocking in of the pair, however, will move away om the roller hearing Astock 28 may which engages it thereby causing the roller bearing 26 tobe moved away from theparticular lug 23 by means of the coiled springengaging the same. This willcause the roller bearing 26 to engagethe bod1 within the interior of the pocket 4. W

the roller bearings willbe movedinto binding engagement with the body 1while three of the roller bearings will be moved from engagementtherewith. As the device is shown in Fig. 4-the. sleeve 7 and lockingcam 14-will' be rotated when the head is rotated inthe direction of thearrow, or in a clock: wise movement. T1118 18 caused since the rollerbearings carried or positioned upon the right-hand side oftheirrespective lu s 23 are in binding engagement with the ha y- 1 within thepocket .4 and also in a binding.

engagement with the shiftingpin 18 or the locking cam 14. As soon. asthe handle has been moved as faras possible in one direction it may bemoved so as to cause the head to rotate in the counter-clockwise mannerwhich. will cause the roller bearings upon the right-hand side of thelugs 23 to be moved toward the lug compressing the springs 25. Theroller bearings 26, how.-..

ever, upon the left-hand side of the lugs 23 will notinterfere in themovement of the hen the. plate is shifted it will be seen that three ofhead or cam into binding engagement with the same as the pins 18 uponthe left-hand side of the lugs 23 will hold the roller bearings fromengagement with the body 1.

When so desired, the trigger' 20 may: be pivoted upon the operating pin19 at which time the pin. 19 may shift the circular shifting plate 17 soas to Cause-the pins 18 to move the roller bearings 26 upon the right.-hand side of the lugs 23 from engagement with the body 1 at which timethe pins' upon the left-hand side of the lugs 23 will allow the rollerbearings upon the left-hand side of the lugs 23 to engage the body 1,thereby allowing'the cam 14 and sleeve 7 to be rotated in an oppositedirection to that indicated by the arrow in Fig. 4.

From the foregoing description it will be seen that a simple andeflicient intermittent grip device has been produced which may operatein either direction and which is provided with a simple means forshifting the operating mechanism which will cause the same to positivelyoperate by a binding engagement with the mechanism.

It will also be seen that this binding mechanism will allow the deviceto operate by the least movement of the handle inasmuch as the rollerbearings and shiftin mechanism are so formed as to always be In abinding engagement with the locking cam.

What is claimed as new is 1. A. device of the class described comprlsmga body having an operating handle, said body provided w1th an enlargedpocket,

said body also provided with an opening communicating with said pocket,a sleeve passing through said opening in said pocket, saidsleeveprovided with an enlarged head inclosing sald pocket, and fittingover said sleeve, a cam' positioned in said pocket, means for holdingsaid sleeve and cam against independent rotation, said cam comprising asubstantially triangular cam provided with an integral lu extending fromeach side thereof, each 0 said lugs provided with a pluralityof sprinreceivmg pockets, coiledsprings carrie within said pockets and extendingtherebeyoiid, a plurality of roller bearings positioned within saidpocket and engaging the free ends of said springs, said head providedwith a circular groove, a shifting plate positioned within said grooi e,said plate provided with of said operating pin,

a plurality of shifting pins extending into pins adapted to engage alongitudinal slot, an operating pin enga ing said shifting plate andpassing throng said slot, a trigger carried by the outer end said headprovided with a plurality of notches adapted to be engaged by saidtrigger whereby said .pin may shifted for moving-said plate at whichtime saidtrigger may engage one of said notches for ho ding said platein a set position, said pins engaging sald roller bearmgs whereby whensaid plate is shifted a pllgrality of roller hearings will be moved m bnding engagement with said body,

'-and the remaining roller bearings will be moved into bindingengagement with said body and said cam whereby said cam will be rotatedas said body is rotated in one direction, and said body adapted to berotated in the opposite direction. without interference from said rollerbearings.

2. A device of the class described .comprising a body having anoperating handle, said bod provided with an enlarged pocket, said bodyalso provided with an opening communicating with said body, a sleevepassing through said opening in said pocket, said sleeve provided withanenlarged head inclosing said pocket and fitting over said sleeve, a campositioned in said pocket,

means for holding said sleeve and cam against. independent rotation,said cam comprising a substantially triangular body, said cam rovidedwith an integral lug extending rom each side. thereof, each of said lugsprovided with a plurality of spring rebody, said 1 ceiving kets, coilsprings carried within said 00 ets and extending therebeyond, a plum ityof roller bearings positioned within said pocket and engaging the freeends of said springs, said head provided with a circular groove, ashifting plate positioned within said groove, said plate provided with aplurality of shifting pins extending into sald pocket, said pins adaptedto engage said roller bearin means for shiftin said plate, whereby w ensaid plate is shifting said pins will move so as to allow a plurality ofsaid roller bearings to move in binding engagement with said body andsaid cam whereby said cam will be rotated as said body is rotated in onedirection and said body being adapted to be rotated in the oppositedirection without interference from said roller bearing.

3. A device of the class described comprising a body having an operatinghandle, said body providedwith an enlarged pocket, said body alsoprovided with an opening eommunicatin with said pocket, a sleeve passingthroug said opening in said pocket, said sleeve provided with anenlarged head inclosing said pocket and fitting over said sleeve, a campositioned within said pocket, means for holding said sleeve and camagainst independent rotation, said cam comprising a substantiallytriangular bod havlng bowed side portions, lugs forme integral upon saidcam at spaced'distances from the corner portions thereof, rollerbearlngs positioned within said pocket, coil springs engaging said lugsand roller bearings for normally urging said roller bearings away fromsaid lugs, means carried within said pocket for engagin said rollerbearings and moving a plura ity of the hearings in the desired directionat which time the remaining bearings will move into binding en gagementwith the outer bowed surfaces of said cam and the inner surface of saidbody whereby when said body is moved in one direction, said cam andsleeve will also be moved in the same direction, said body being adaptedto move in the opposite. directionwithout interference from said rollerbearings.

In testimony whereof I hereunto afiix my signature in presence of twowitnesses.

OSMOND E. LOOMIS.

Witnesses:

E. T.' MALOBY, CLARENCE R. Form.

